Excavator.



A Ishown in the last inentionedpatent. l

or receiving bucket adapted torecoive the excavated materiel in the di gvlng bucket and e 3 is n plsu view of the machine with the parts showii'in Fig. 4.

ing buckets.

raisonne.

'1'0 all whom it may concern.' f

Beit known that I, OLAF HETLaeAnTi-:R a citizen'of the United States,residiii at Mil! wnukee, in thecounty of Milwau ee and State of Wisconsin, have invented a certain new and useful Improvement in Excavators, of which the following is a specificationv My invention vrelates to -improvementsin' excavators of the General class. embracing the machines descrioed in the following Letteis Patent'of the United States heretofore grunted to me: No. 649,244, issued Me A 8, 1900; No. 649,408, issued May'B, 1900;'7ilo. 059,632,1ssued oct.. 9,1900; Nol.ee5,ee'3, issued JaiLS, 1991; No. 665,685, issued Jen. 8, 1901; No. 667,315, issued Feb. 5,1901;-

iso9,991, igsoed Mar. 19, 1901; No."86s,267,

issued Oct. 15, 1907. 1

This present invention in a certain sense cinbodies improvements over the invention- Specification o! Lettera Patent.. Appiicniqn fiiisept'ember 1s, 1997.. serio N5.. 393,503.

Patented Aug supported bv a shaft 2 'mounted in a suitable ortioii 3 of the framework of the machine..

his member is operate i bv means of con- -necting rods 4 operated by the 'crank arms 5,

whichA preferably constitute an integral portion of the master gears 6, 'said muster gears being driven by any suitable gcarinfl 7 and povver device 8. Thc'digging mem er 9 i's\ suspended from theoscillntiug member 1 by`\ means of the linkslO and is controlled, that is, thrust toward or retracted from .the bank of earth by means of the controlling members 1 11. By. preference meinbeis 11 constitute' 'en integrcd portion of the gears 12 which are operated by the pi'nions 13. Said pinion-IB are rigid on eslio'ft 14 which is driven by an 'suitable greeting 15-end eontrolled'throug For convenience. both the master gears 6 and the controllinggears-12 are mounted upon the same shaft l 17. The controlling gears 12 are loose u on the'clutch mechanism 16:

said shaft, es indicated in Fig. 5, and t cir The general object of the present invention ,movement therefore is independent of .the

is to provide au oxcavator-whichis simple`- :uid positive in its action anilcapable of contiiuious operation without the 'necessityp swinging the bucket laterally between cach ligging movement.

As supplementary-to this latter character-,- istic it is an object to provide esupp'lefmentel to forward seid material to e Topper or other receptacle from whieh'theiexcevatel nieterial may be iinelly-removed. Ifobtain'these objects by the mechanism illustrated in the accompanying drawings, 4in which:

Figure 1 is'iiI General side view of the mschine' showing the digging bucket in `digging position. 'lfim '2 isa similer'vieiv showing the digging bucket in discharging positionk- Fig.'

Iii thc prcferrcdfforiu of machine, shown, the main oscillating member l is'pivotally rotary movement of the' master gears 6.1- A 'The manner of the operation of the above,

described parts is as Afo lows: The power device 8 having a continuous rotary movement drives the inasier geom 6 with a continuous Arotary movement which causes e continuous sciilatoijv movement ofthe oscillating meinbei 1. This ce'uses a continuous hoisting" end lowering of the member 9 from the position tor exemple shown 1n full Alines Fig. 1 to the position shownin Fig.A 2.j' `The depth of the cutis regulated by the operetor who throws in the clutch mechanism. 16 in the mannerdesired by him, either in the forwerd'or reverse direction, thereby controlling the 'vosition of the members. 1.1 iiletely connected to the di`gwhich are artic ging .member 9. The position o1 tliediggii'ig member laterally 1s determined by the. ea

'inv 18 located 'preferably b'enesth the ie-.: vo platform 19-as best showii'in Fi It will thus be seen that the parts doscri ed .constitute 4a complete excavating a paretus excepting the. ineens for' removing rom the digging member the materiel oxca'vs'ted'by A .15 l it. An iiiiportzint characteristic of the inachine is tlni the digging member oseillstes 1 about a fixed exis through :11i arcfless than a complete circumference,that the reversal iiiz direction of motion of the digging member is automat-ic and J(het the oscillatory motion is i i i i i l f i i l l l l 20 l l l; l l 2:',

manner illustrated in the drawings.

continumis.. In this respect the present machine is like the machine shown in my Patent No. 863,267, issued October l5, 1907.

Although dill'ereiit means' may be. einployed for removing the excavated material from the digging member, l prefer to employ asnppleinental bucket 2U constructed in the In the design here shown this supplemental bucket is rigidly secured to an arm 2l pivoted to the framework of the machine at the sha-lit. 22. This arm 2l is operated by means of a red 23 connected to the inner extreiiiit-y of the scillating member 1.

v reference to Figs. 1 and 2 it will be clear that. in operation when the. digging member 9 is hoisted to the positioiitshown in AFig. 2, the receiving bucket 0 will be in position te receive material therefrom and when the digging nieiiibei' t) is lowered to the digging position shown in F ig. 2 the receiving bucket will be elevefsed to the discharging ositioii from dumping:` its contents into t-lie liopper 24 or whatever receptacle i's rovided. The supplemental or receiving buc :et being .connected to and operated by the' parts which o )crate the digging member, it is ofl course e ear that the parts will operate in timed relation, automaticallv,4 and will therefore require. no attention on the part of the operator. The receiving bucket will receive the contents of the digging member and will then dischargt` said contents whilf.l the digging member is acquiring a new load.

lt will be noted tha-t while the receiving bucket 2l), is being raised the digging inembcr t) is being lowered, and that while the re ceiving bucket is being lowered the digging member t) is being raised. 'llie result is that the machine takes advantage of the weight of the descending member for assisting in the elevation of the ascending member. There is consequently a counterlailancing ell'cct between the digging and receiving members of the machine and as ,a result less power is retluired to operate it than would be required it the parts were not thus connterbalanced.

It is desirable to provide means for insuring complete delivery of the load from the digging member to the receiving bucket and hence it is desirable to emplo) in the digging member a bucket 25, which, in the present inst-ance is hinged upon the pin 2G iii the digging member 9 and has a rear extension 21. which comes to be struck b v .the receiving bucket as indicated in Fig. 2. As is `shown, the striking of the bucket 2U upon' the rcarextension 2T of the bucket 25 causes said bucket 5 to tilt backwards and forcibly eject its contents into the bucket 2u. 'lhe shock or jar incident upon this impactV tends to loosen any material such as chr-\',. which might otherwise have a tendency to adhere to thc bucket 25.

It is desirable that means be provided-for preventing the digging member t) and controlling member 1l from straightening out' bevond center. ln the present design this purpose is accomplished b v means of the cham 2!) which is fastened at one end to said digging member and at. the other end to said contro ling member.

lV hat I claim as new and desire to secure by Letters Patent, is:

1. An excavator having. a digging member adapted to oscillate about a lixed horizontal axis, and means for rotating said digging member aboutsaid axis through :in arc lessthan a complete circumference and automaticallv reversing the direction of rotation ot" said digging member.

.Z.`.\n `exca.'ator comprising a. digging member, an oscillating member connected thereto for raising or lowering it, a crank connected to said oscillating member for oscillating the same, and means includiiur a toothed gear for thrusting and retracting said (ligging member.

3. An excavator com irisinr a dimfinf h h5 n member, an oscillating member linked thereto for lowering and hoisting it, a crank couiieeted to said oscillating member for oscillating it, means l'orcont-iiiuousl)- rotating said crank and controlling means including gearing and a power device for operating ittor thrusting and retracting said digging member.

4. An excavator comprising a digging member, an oscillating member linked thereto for lowering and hoisting it, continuouslv operating means lor oscillating said oscillating member, and a rcccivner bucket-for fio receiving and removing the contents ol said digging membciysaid receiving bucket. being connected lo und operated b v the means which operate the digging member.

5. An excavator comprisingr a framework and digging member, an oscillating member connected thereto for lowering and hoisting the same, means for operating said oscillating member. means l'or thrusting and retraetiiig said digging member, and a receiving bucketl pivoled to the framework ol' theinachine and connected to and operated by said oscillating member l'or automaticallv receiving the contents ol' said digging nicmbcr and discharging.said contents at a distance.. .Y I: .1

6., An excavator comprising a digging member,v continuously operating means for raising and lowering it, and a bucketcarried-- by said ldigging member, said bucket being pivoted to said digging member [or facilitating the discharge of excavctcd material. 7. An Icxcavator comprising a digging member, continuousliv operating means for raising and lowering it, a bucket carried b v said digging member, said bucket being pivthe discharge of excavated material, and l scrbcd'my name in the presence of two Wit receiving bucket for receiving and removing ncsses. the contents of said digging member, said OLAF HETLESAETER..

5 receiving bucket being nda ted to Contact Vv'iinesses:

'v1 A n A K salu dxggmg bucket and tx tt'he same for HOWARD nl. box, f

emptymg it. r C. J. CumsToFFEL; 

